Vulnerabilities > CVE-2018-20498 - Incorrect Authorization vulnerability in Gitlab

047910
CVSS 4.0 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
SINGLE
Confidentiality impact
PARTIAL
Integrity impact
NONE
Availability impact
NONE
network
low complexity
gitlab
CWE-863
nessus

Summary

An issue was discovered in GitLab Community and Enterprise Edition before 11.4.13, 11.5.x before 11.5.6, and 11.6.x before 11.6.1. It has Incorrect Access Control.

Vulnerable Configurations

Part Description Count
Application
Gitlab
846

Common Weakness Enumeration (CWE)

Nessus

NASL familyFreeBSD Local Security Checks
NASL idFREEBSD_PKG_B2F4AB910E6B11E98700001B217B3468.NASL
descriptionGitlab reports : Source code disclosure merge request diff Todos improper access control URL rel attribute not set Persistent XSS Autocompletion SSRF repository mirroring CI job token LFS error message disclosure Secret CI variable exposure Guest user CI job disclosure Persistent XSS label reference Persistent XSS wiki in IE browser SSRF in project imports with LFS Improper access control CI/CD settings Missing authorization control merge requests Improper access control branches and tags Missing authentication for Prometheus alert endpoint
last seen2020-03-18
modified2019-01-07
plugin id120973
published2019-01-07
reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/120973
titleFreeBSD : Gitlab -- Multiple vulnerabilities (b2f4ab91-0e6b-11e9-8700-001b217b3468)
code
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2020 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
#    copyright notice, this list of conditions and the following
#    disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
#    published online in any format, converted to PDF, PostScript,
#    RTF and other formats) must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer
#    in the documentation and/or other materials provided with the
#    distribution.
# 
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

include("compat.inc");

if (description)
{
  script_id(120973);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/02/26");

  script_cve_id("CVE-2018-20488", "CVE-2018-20489", "CVE-2018-20490", "CVE-2018-20491", "CVE-2018-20492", "CVE-2018-20493", "CVE-2018-20494", "CVE-2018-20495", "CVE-2018-20496", "CVE-2018-20497", "CVE-2018-20498", "CVE-2018-20499", "CVE-2018-20500", "CVE-2018-20501", "CVE-2018-20507");

  script_name(english:"FreeBSD : Gitlab -- Multiple vulnerabilities (b2f4ab91-0e6b-11e9-8700-001b217b3468)");
  script_summary(english:"Checks for updated packages in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote FreeBSD host is missing one or more security-related
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Gitlab reports :

Source code disclosure merge request diff

Todos improper access control

URL rel attribute not set

Persistent XSS Autocompletion

SSRF repository mirroring

CI job token LFS error message disclosure

Secret CI variable exposure

Guest user CI job disclosure

Persistent XSS label reference

Persistent XSS wiki in IE browser

SSRF in project imports with LFS

Improper access control CI/CD settings

Missing authorization control merge requests

Improper access control branches and tags

Missing authentication for Prometheus alert endpoint"
  );
  # https://about.gitlab.com/2018/12/31/security-release-gitlab-11-dot-6-dot-1-released/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?53f6e94b"
  );
  # https://vuxml.freebsd.org/freebsd/b2f4ab91-0e6b-11e9-8700-001b217b3468.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?4651a575"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-20501");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:gitlab-ce");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/12/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/01/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/01/07");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"FreeBSD Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");

  exit(0);
}


include("audit.inc");
include("freebsd_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (pkg_test(save_report:TRUE, pkg:"gitlab-ce>=11.6.0<11.6.1")) flag++;
if (pkg_test(save_report:TRUE, pkg:"gitlab-ce>=11.5.0<11.5.6")) flag++;
if (pkg_test(save_report:TRUE, pkg:"gitlab-ce>=8.0.0<11.4.13")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:pkg_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");